Sheet assembling machine



bec. 22, 1953 r T. A. PATTY SHEIET ASSEMBLING MACHINE 7 Sheets-Sheet l Filed Aug. 29, 1952 THOMAS A. PATTY @www l ATTORNEY lllll/ll/IA D.22,1953 T; A PATH 2,663,019

SHEET ASSEMBLING MACHINE Filed Aug. 29, 1952 7 sheets-sheet 2 INVENTOR. lan-lows' A. PATTY FI G. 8 T

f 9 ATTORNEY Dec. 22, 1953 T. A. PATTY 2,663,019

SHEET ASSEMBLING MACHINE Filed Aug. 29, 1952 '7 Sheets-Sheei'l 5 FIG. l2

IIllu,

A INVENTOR THOMAS A. PATTY Y BY /bwm ATTORNEY Dec. 22, 1953 T A, PATTY 2,663,019

SHEET ASSEMBLING MACHINE INVENTOR THOMAS A. PAT TY ATTORNEY Dec. 22, 1953 T. A. PATTY 2,653,019

SHEET ASSEMBLING MACHINE Y Filed Aug. 29, 1952 7 Sheets-Sheet 5 R W Y m T m N A R W P O ud m A. w m M. H

Dec. 22, 1953 T. A. PATTY SHEET ASSEMBLING MACHINE '7 Sheets-Sheetl 6 Filed Aug. 29, 1952 FIG. 22

I IM/ENTR` THOMAS A. PATTY eaw.

ATTORNEY Dec. 22, 1953 T ,1 PATTYl 2,663,019

SHEET ASSEMBLING MACHINE,

'Filed Aug. 29, 1952 '7 sheets-sheet 7 1111/11/ 1111/11/ lll/11, 11

INVENTOR THOMAS A. PATTY ATTORNEY Pareatea Dec. 22, 1953 UNITED STATES PATENT OFFICE SHEET ASSEMBLING MACHINE Thomas A. Patty, Miami, Fla. Application August 29, 1952, Serial No. 307,049

8 Claims.

' impressed and references herein expressed to any of either species of imprinting machine will be understood merely to exemplify such functional, and not structural, association of the apparatus of the invention therewith.

It is one of the objects of the invention to provide an apparatus of the character and for the purposes described, which will be compact in assembly, capable oi ready and economical manufacture, and simple and efficient in operation.

Other advantages of the invention will be discernible from the detailed description thereof hereinafter set forth.

The invention is embodied in the apparatus exemplified in the accompanying drawings in which the views are as follows, like reference numerals being understood to designate identical or analogous parts throughout the several views:

Fig. 1, a diagrammatic elevation in partial section, withi parts broken away for clarity, of one adaptation of the invention;

Fig. 2, a plan.' in part, of the strip-conducting track; and

Fig. 3, a typical transverse vertical section therethrough Fig. 4, a section on line 4-4 of Fig. 2;

Fig. 5, a section on line 5--5 of Fig. 11;

Fig. 6, a left end elevation of the view shown linFig. 5;

Fig. '7, a section on line 'l-l of Fig. 11;

Fig. 8, a, fractional plan of an end portion of the cutter head and Fig. 9, a section on line 9-9 of Fig. 8;

Fig. 10, a section on line IO-lll of Fig. '7;

Fig. 11, a section on line II-H of Fig. 5;

Fig. 12, an isometric view of a stacking bin shown in Figs. 16 and 21, and

Fig. 13, an enlarged section therethrough on line |3I3 of Fig. 16;

Fig. 14, a typical solenoid structure;

Fig. 15, a perspective of the trimming wheels in relation to the strip cut thereby;

Fig. 16, an elevation of the stapling and dispensing mechanisms;

Fig. 17, a transverse sectional elevation of a typical roller mounting;

2 Fig. 18, an elevation taken from line I8-l8 of Fig. 21 of the strip propulsion driving assembly;

Fig. 19, a fractional plan thereof;

Fig. 20, a sectional elevation of the strip deectors taken on line 20-29 of Fig. 18;

Fig. 21, a diagrammatic elevationalf view of the invention in strip-receiving relationwith a photo-image printing machine of known type; Fig. 22, a fragmentary sectional elevation of a magnetic clutch drive mechanism;

Fig. 23, a section on line 23--23 of Fig. 21;

Fig. 24, an isometric projection of the control cam block, and

Fig. 25, a wiring diagram of'a suitable control for the automatic operation of the invention in common with the imprinting machine served thereby;

Fig. v26, a magnetically-operated severing knife;

Fig. 27, an endelevation, partly broken away, of the view shown in'Fig. 21; and

Fig. 28, a perspective view of a block of sheets produced by the invention and united and dis'- pensed thereby.

The apparatus of the invention comprises the usual track for conducting the imprinted strip received as at S' (Fig. 1) from the printing machine, and suitable supporting structure to carry the track, a typical cross-sectional view of which is depicted in Fig. 3. The strip, now in passage through the apparatus and designated S, is supported for travel on a bed plate I, the sides of which may be bracketed by angle members 2 to a pair of outer side rails 3. These rails terminate at the top thereof in inwardly extending Va pair of side grooves in which the strip is freely movable through the apparatus.

The strip is propelled in the usual manner, by a plurality of rollers 5 in frictional engagement therewith and journaled at each end in a pair of upright posts or channels E which form a part of the track supporting structure. The size and arrangement of these upright members and their associated braces and the like will be understood to vary with the shape and conformation of the particular adaptation which the apparatus of the invention undergoes to meet the structural arrangement of the printing machine served thereby. Motive power for the roller assemblies may 'be derived from a fractional horsepower motor M, carried by suitable channel members 1, and driveably connected with a worm gear 8 mounted on a shaft 9, through intervening reduction transmission structure shown generally at W. The shaft t, on which is mounted one of the upper rollers, is rotatable by a sprocket it over which is passed a chain l I in meshing engagement with like sprockets f2, mounted on the shafts of other rollers in the train whereby the strip is advanced in the direction of the arrow (Fig. 1).

Interposed in the path of the strip, is a slotting mechanism..which functions to .cut atransverse slot I3 at uniform intervals therealong (Figs. 2 l0 and 'I'he slotting mechanism (Figs. 5 to 15) com-. prises a cutter head I4 in the bottom face of which is secured a cutter I5, extendingcrossif wise of the strip and spaced thereabove, the cut- 15,

ter being shaped to the die to whichthe slots are cut. Arranged on the cuttenjieadisagfollowerz. consisting of a roller I6, rotatable in a .pairef trunnions II fastened tothe top face of the out; ter head. The follower is engageable by an overo headcam I8 which' forms the commoncoreof a pair of `opposedfsolenoidsl I9and 2B, secured in any suitable manner to adjacent framing structure, as at 2I. The cam. 1I8 is reciprocable'upon the-alternate energization offthe solenoid coils :5 to depress the roller II Yand 'cutterhead thereunder, .wherebyto perforate the strip S (Fig. '7) Vwhich passes over .a die block 22.l This block has afcomplementary.` channel :23 vadapted `to receive the rcutterz'l5; .andfmay bewelded at each end 30 thereof to adjacent.ifrarrring'members;. as the uprightichannels 24.-

Against' 'the .outerzweb :faces of the channels 24, is formed a pair of rectangular Vposts 25, each (Ji-:which has threaded into' the'top thereof, an 3,-, upstanding'cylindrical-stem 26k passed loosely throughv .the cutter r head. I5 thereabove.- Coiled around each of these stems, is a helical spring 211 .upon .which the-.cutter head is resiliently supported to. cushion thea impact thereof onA its 40 downward stroke.l Afnutz28, threaded on .the top end of thestem,.is turnable to adjust the tensions ofispringsll and. .the spacing-,of .the cutter in relation to the strip thereunder.

The cutter. head has'arranged adjacent each l end. thereof, a pair of loosely fitted plungers 29 passedvertically therethrough and terminating at vthe top thereof in a pairof adjusting nuts 3) threaded thereto. These plungers each have a helicalspring 3| coiled therearound, adapted to bear at one end against the bottom of the cutter 9 head and at the opposite end against a cylindrical shoe-32 .carried at .thebottoin of each plunger. These shoes have .abottomfacing of nonmarring material 33.

Upon a downward stroke of the cutter, the shoes 'f "1 32 are brought into momentary engagement with the strip S, arresting the movement thereof to permit the cuttertocomplete perforation of the slot. I3 therethrough..

The solenods I9..and .may Abe..energize:l 50 through l an. electrical circuit. .more specically shown in thewiring diagram (Fig. v). butv governed by two switches, one ofwhichis actuated bythe .advancing strip and theother, by a cam wheel rotatable-.with one. of the rollers. and hav- G5 ing the .same R. P..M. As illustrated in Figs. 5 and..11,.the stripactuated 'switch consists of a pair-of .laterally-spaced, normally upright lingers 34. projecting above the bed plate I, in the path v7of the advancing strip. The fingers are pivoted to 70 a frame 35, supported by a cross-member 35 spanning the track therebelow, and connected by a shaft 31 which" carries atone end thereof a small .mercoid type tube 38.l This v' tube, normally level, has the usual pair of"term;ina1s"39fwhieh '1 5 4 are bridged by the mercury content of the tube upon the tilting thereof. A small blade spring i8 is adapted to bear slightly against the ngers, exerting only suicient force to barely maintain the fingers in upright position. A pressure roller lll, mounted on a shaft G2, is positioned to bear against the top face of the strip to assist the same in maintaining sumcient rigidity for the positive engagement of .the ngersthereby, thus pivoting the-iingersfto .tilt the mercoid tube as long as the strip is in transit thereover. The peripheral dimension of the pressure roller 4I equals the longitudinal interval between adjacent slots I3, i.;..e., onejrevolution of this roller advances the strip a distance egual to the interval between slots:4 Theroller shaft 42 carries a cam wheel 43 ymountemto..intermittently engage and iiex a spring leaf type of switch blade 44. This blade is 'in 'normal electrical contactwith a pair of terminals and 45 (Fig. 6) which it is adapted to bridge.. When ilexedby cam wheel-:43, ,theblade breakscontact with terminal '45 to make contact with terminal L-closing/a circuit".throughter-v ininalsl5and II'I. A n

With the tilting of `niercoid .tube1384 (Fig. 2,5). one side.of apower supply feeds throughl terminals 39, and whenblade 44 is simultaneonslyde-4 pressed by cam-wheel 43, this feeder connects ter, minalJl, to which it is led with one terminal of solenoid I9 of which the other terminal isfed by the opposite side ofthe powersupply-,lthus completing a circuit-through solenoi'cl. .lI9 '.t tract its core, cam I8, to depress 4the .cutterli'ead assembly and perforate thefstrip... .Uponithefr'ef lease4 of. bladeV 44 by -passag'eof thgfcam wheel therefrom,.and the subsequent ,of terminals 45 and 46; this feeder leads throughthese terminals for diversionto solenoid 25, being con-- necte'd to one of its. terminals .of which. the other is .fed-by; thevopposite .sideof the power. supply, thereby energizing solenoid-,28.tofretract it-score and reciprocate cam I8 for.the elevationofj'the cutter.. head,- as will -be ...understno`dlthe strip perforating cycle is repeated '.oncein feach n revolution of roller. 4l to eiect the slotting ofthe stripv during its passage over .the fingers M ,which revert to their normally erect positions when the strip has cleared these fingers. The energizing circuit through solenoid I9 remains broken by virtue of the return of the mercoid tube to its normally level position until passage of another strip through the slotting station'.

Further interposed in the path of theadvancing strip are two pairs of trimming wheels arranged in an upper pair 48 and a lower pair 49 (Figs. 1 and 15), the operation of which is fully described in U. S. patent to Tuttle et al., No. 1,957,863. These cutting members trim the strip along the marginal sides thereof along lines which intersect the slots I3 at their extreme ends whereby to cut or trim out a sheet or frame 5U. Each individual sheet is thus dropped into a stacking bin 5I arranged on the under sideof the track structure in'receiving relationthereto, there being a forwardly inclined chute 52 extending from the rear wall of thebin to direct the sheets thereinto. The marginal side portions -of the strip continue as ribbons 53 to travel upon shelf members 5d toward a suitable waste receptacle 55, positioned at'the discharge end of the 'track Structure.

The stacking bin has a' bottom outlet, normally closed'by a pivotable dump platform 55 (Figs. 12, 13 and 16), adapted to receive the sheets 5Il"in'stacked relation thereon; This platform. is hinged, as at 51;' to the frontlwall "582 of the bin and locked in closed position by a retractible latch 59 forming the core 59 of a solenoid 60. The platform has a bell crank 6I formed thereon and linked by a core 62 of a solenoid 63.

Formed in the top face of the platform, adjacent the front edge thereof, is a clincher recess 64, and cri-operating with the platform is a stapler having a stapling head 65 carried by a lever arm 66 pivoted to a suitable post or standard 61 (Fig. 16). The arm 66 terminates in a bell carnk 69, linked to the core 1G of a solenoid 1|. Y When the solenoid H is energized, the head 55 strikes through a slot 'i2 formed in the front wall of the bin to clinch a staple through the stacked sheets 5S deposited on the platform (Fig. 13), the prongs of the staple 13 being received in the clincher recess 64. In timed relation with operation of the stapler, the solenoid is energized to retract latch 5S, and solenoid 63 is energized to retract its core 62 to pivot the platform for the discharge therefrom of the block 50, a down- Wardly directed chute 'M receiving the block for delivery from the apparatus.

The stapler herein employed may be of any of the conventional types having a feed magazine 68 charged with a supply of staples for delivery to the headli.v However, I do not limit myself t'ofa4 stapler of any' specific design, and a type having" a` supply coilv of stapling wire may be installed inrtheapparatus, the essentialcharacteristicof'such a'. device being that it shall have a-stapling h ead 652 capable of receiving the staple f and oscillable to strike the dumping platform to clinch the sheets ftherebetween.

Solenoids herein 'employed are known as the projectedvfcoreftype (Fig. `14), having suitable springfmechanism'-showr'igenerallyV at 'l5 and adapte'dzto `urge` the core member 'I6 into extended. position, the core being retractible upon energization of the solenoid armature.

The invention is thus seen to be applicable, in practice, in functional association with a printing machine, from which the imprinted strip may issue with a. succession of individual sheet areas, frames, or panels impressed thereon.

Such an imprinted strip may likewise be preslotted, either in the printed machine or as the blank strip therein introduced, in which event the slotting expedient herein described may be inactivated during the passage of the imprinted strip through the apparatus of the instant invention.

Proceeding, then, to Fig. 21, there is shown an imprinting machine of a known type in which the strip S' is impressed with successive panels through the photo-print process, the subject matter thereon being either of a person, an identication card, type-impressed text, cr of any copyable embodiment known in the art.

These machines usually include a means to impress an image upon the strip, which may be of the type known as positive print paper. The strip is passed through the conventional developingr tank containing the necessary revers ing, fixing and rinsingr solutions, applied thereto in any manner known in the art, or the tank may employ any of the gaseous mediums available for this purpose. The exposed and developed strip is then passed through a drying chamber from which it is discharged for reception by the apparatus of the instant invention.

By association of my apparatus with the irnprinting machine, this strip will be fed, trimmed and severed into a plurality of individual sheets or panels, and the panels stacked, fastened and dispensed in finished form, as of coupon or ticket blocks, cash memorandums, pictures and the like. The imprinting machine served by the instant apparatus is depicted in broken lines and the invention in full lines, like or analogous parts being designated by the reference numerals heretofore employed.

The strip S is fed from a supply reel R, past the focal plane of a lens barrel L to which is directed a reflecting prism P having Within its field of view a subject occupying a stool N and illuminated by flood lamps F (Fig. 2 '7) ofwhich subject the strp is to have a sequence of images imprinted thereon. The strip is advanced by the usual roller assemblies driven through intervening belt or chain drives and appropriate reduction gearing by a motor M'. The conventional shutter device (not shown) is included in such strip advancing means and a magnetic clutch to control the footage of strip exposed, when operating a single motor, may be of a type illustrated in Fig. 22. A camera drive pulley 'l1 having a belt-drive connection with the roller assembly passing the strip through the focal plane is fixed upon a shiftable shaft 18 on which is xed a clutch-disk 19, normally out of engagement with a complementary disk fixed upon a driven shaft 8l having reduction driving connection with the motor M. Surrounding the shaft 8l, is an electromagnetic coil 82, which is energizable to shift the disk 19 intofrictional engagement with disk 80 thereby coupling shafts 'I8 and 8| together. By bringing this clutch into electrical circuit engagement from a master,

exposed portionof strip past the lens barrel-'and-4 inactivate the camera; drive means While con-A tinuing to advance the strip through subsequent operations ofthe machine, as will be understood,`

through the belt or chain driving connection eiected from the pulley 83 which is fixed uponvv the constantly driven shaft 8|; Means for severing the exposed portion of thestrip from the unexposed portion thereof usually include a magnetically-operated knife (Fig. 26) arranged at the bottom of the lens barrel and an electric circuit to energize the solenoid 84 in timed relation to the passage of the strip whereby to pivot the knife 85 into severing relation therewith. Such circuit would be activated simultaneously with the. de-activation of the camera drive pulley T1 heretofore described but is not further exemplified. being no part of the invention.

The exposed portionof-the\strip S continues in travel through developing tank T anddrying chamber D, emerging therefrom as the imprinted strip S which the apparatus of the instant invention is adapted to handle. The strip is now fed through the slotting and trimming stations for the disassociation therefrom of the sheets or panels as hereinbefore described, these being stacked, stapled and discharged through chute 14.

I prefer, in this embodiment of the invention, to terminate the strip-conducting track in a forwardly and upwardly inclined flight, as at 86, whereby to facilitate the falling of the severed sheets or panels in a more nearly level position, since each sheet has a tendency to drop at its foremost edge in advance of its rearmost edge. Preceding this terminal night, the track is directed in a downward flight symbolized by the driving chain 81 whereby to reverse the direction of the strips travel so as to bring the imprinted awesome f face'. thereof:l `-on: .their under side,' the. .first-sheet'- to-beflsevered thusibecoming. thefirst sheet the 'finished block. Figs.' 18 and 20 illustrateaz. suitable deiector means for guiding the'strip itsreversal .inv travel, there being a Adei-lector. 81A... 5 to. direct the strip in downward travel and a .de-.vv flector'lC to direct its as'cent intheterminal.' flight, these deflectors being hinged to. a.iplate'f. 81B and held in operative positions .byl spring members arranged thereagainst, as. at 81D.

It .will be understood that the relative/speedsV of 'thestrips travel through the successive operationsin. the imprinting machine and the nec' essaryiexp'edients therefor, are not heredescribed',... sincelthesedo not `form a part. of .the instantine. 15

vention;

A commonele'ctrical ,control for' the imprinting' machine and'. the .instantl apparatusiisillustratedl' in..Fig.25, employing a master timing'device .having .an .escapement .mechanism as.' describedln.' 20 UT. S. Patent No. 2,227,133 to Hall..

These. timing devices have. an electricclock.' motor/.shown symbolically at 88, whichdrive'sai camfshaft 89 through intervening'escapement:

mechanism shown, generally, at `9i). This shaft' 25- rotates a cam block (Fig. 24) asat' 9|, comprislng aplurality of cams 'having intermittent engage' ment with a' corresponding. plurality of "switch contact blades, as at4 '92. These contactsiare broken by a'gap'sector 93 in 'each cam, remaining: 3o

. normallyclosed when the blades'are nexed as il lustratedinlthe drawing. f Y .1 .1 The speed 'ratios between '.cams, gap sector Tdeigrec, and likefcontrol factors, are pre-determinable. ina manner known in the art'so as to eect; the energizationA of the several 'circuits'.in timed.' relation'. to activate' the. correspondingmecha-- nisms .governed thereby. Asaviewed 'in" Fig'.'.'25; sunice it .to point out that: 'f

Power-feeders 94 and 95 are ledto a solenoid 93,.A the. 'function of 'which is to' initially"rotate' thev cam Ablock across the gap sector of the timer.' switch I, through a bell crankl to which ther solenoid core is linked. This switch will be normally open following a prior operating cycle. The' crank 91 has a pawl and ratchet assembly to idle th'e crank after the cam block has responded 'to' the timer drive following the closing of switch I. One of the leads, 95, may be diverted through a coin-operated switch of known type having' contacts at 98 which are closeable by the passage' of .a coinE down the chute U, to 'pivot an insu-- lated blade member 99 toward closure of these contacts. Switch II closes to energize motors M and M', heating coil H, fan B, and nood lamps F; Switch IE energizes the magnetic clutch advancing strip S' past the focal plane; switch IV activates the slotter-mehapnismpswitch V', the i staplensolenoid anlswitch VI closes to energize the stacking pin platform release and. dump. mechanisms circuit, by whichthe stapled block ll'is. discharged to thechute 14. fordelivery to an outlet O (Fig. 21).

Theinvention thus provides strip handling apparatus of novel and unique construction. and as sembly, meeting the objects thereof hereinabove announced- A The co-operative characteristic. residing inthe stacking and stapling of the panels orl frames disassociated from the web or strip, as embodied in the stacking bin dumping platform and staple operating assembly, provides a simple and economical apparatus for forming, fastening` and dispensing fa Iunited'plurality of sheets, pages; 75

frames or panelsfimprintediupona web-.ortstripgsire I'to secureiby Letters Patent, is:

1.. Inianuapparatusf adapted to serve an imprinting machineand, .wherein a Aplurality of imprinted :disassociated panels are formed, the com-v bination of aztrack,v a stacking bin arranged below` said. trackzand in '.panel'; receiving relation therewith; a. stapling head. in. operativeassociation witmsaid :him-kart oscillatory ,dumpingplat-- fonnhavingazclinchmg recess 2in'. the top thereof..

andifornmig.:aicomnrombottomplosure fforisaid binonihezdeposiizof the disassociated panels ini stacked-.relationethereon and :an clinching. block.

to receivedzhe s'tapling impact. of. said zhead, means directing Vsaid head'mrdescent upon.V thewstacked` panelato drveia.stapletherethrougmthe prongs ofi'said staple beingnzeceivedgfin@ said;recess for. the clinchingr thereof `in'nompression between said platformxand said. headmnd means pivoting said platformldzo discharge:1 the .fstaple'd i panels :therea fromjiz. :1..'. {LV1-5; i f j:g w:-

f2: 'The' -nventionlas deflnedllih claimflnnd: a.

.retractible'llatchsecuringfsaidsplatformin 'closed position, electri'callys"operat'edV means?. including' a magnet andan electrical 'fcircuitvfon fthe, 'energizatiothereofto retract said latchuio'rfthe `re leaseloisaidiplatformvtdpermt saidepivotal discharging!finovenrentithereoff:':1 ci' s! ik Y 3. The nventiomas'denedzin claimzlfand: said.

platform'pivotingmans comprishig a crank connected .to saldfplatfozhnfa'solenoid having a noi:-t mally fprojectdcore'z linkedf: toxsaidicrank; vand an `'electrical circuit-Sto :energize saldi-solenoid -forv the retraction ofrsaid y'corezto pivot said vcrank and said platformlss; -;-f,

4. .In van apparatus'ladapt'edatof .handle disassociated' panels'riof sheet. :materials1 the: combination 'of' a stacking bin, a pivotable dump platform havingla 'clinchingSIec'eSs in .thertopthereof and forming a 'bottom'.` closure rforsaid bin 4to receive said panels' stackedfrelationlthereon, an oscillatory' stapling vh'ead'lassociated'with said platform, electrically operated means? including a magnet andan electrical :energizing circuit therefor. rior-.pivoting saiclheadl-to driveua staple throughsaid panels, .thet prongs :ofrsaid staple being receivable in said recess for the clinching thereof.V between said head and 'said platform, and means Ato pivotzsaid 'platform to discharge the. stapled panelstherefrom.

5. The invention as dened in'claim 4 and: a retractible latch securing said platform in closed position, electrically `operated means including a magnet and anelectricalcircuit for the. energizetionthereofto 'retract said latch for'the release of saidV platform,v said platform pivoting meansv comprising;acrank'connected to said platform, a solenoid` having a normally projected lcore linked to said crank, and anelectrical. circuit to energize said solenoid in timed relation'with the release -of said' platform. for the retraction-of said core to pivot. .saidv crank and said platform.

6. The invention as defined in claim 4 and: a retractible latch securing; said `platform in closed position, electrically operated means including a magnet and an' electrical 'circuitf for the energization thereof to retract said latch for the release of said platform to permit the dischargin pivotal movement thereof.

7. The invention as dened in claim 4 and: said platform pivoting means comprising a crank connected to said platform, a solenoid having a normally projected core linked to said crank, and an electrical circuit to energize said solenoid for the retraction of said core to pivot said crank and said platform.

8. In an apparatus adapted to serve an imprinting machine for the reception therefrom of a succession of disassociated panels, the combination of a track, a stacking bin arranged in panel receiving relation to said track for the reception of the disassociated panels, a staple clinching block in association With said bin for receiving References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,177,675 Sherman Oct. 31, 1939 2,482,613

Erickson Sept. 20, 1949 

